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Polar jet stream

K003/3830

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Credit

NASA / GODDARD SPACE FLIGHT CENTER SCIENTIFIC VISUALIZATION STUDIO / SCIENCE PHOTO LIBRARY NASA / GODDARD SPACE FLIGHT CENTER SCIENTIFIC VISUALIZATION STUDIO / SCIENCE PHOTO LIBRARY

Caption

Animated model of the path of the jet stream in the northern hemisphere. The jet stream is a fast-moving belt of eastward-moving winds that form at the tropopause at the boundary between cold polar air and warmer temperate air. Wind speed is colour-coded in this model, with red being the fastest, through orange, yellow and cyan to dark blue (slowest). The jet stream typically exhibits large-scale meanders, called Rossby waves. The position of the jet stream plays a major role in determining the weather beneath it. The fast-moving air encourages the formation of low pressure beneath it, and regions below the jet stream typically see frequent storms and other low pressure weather phenomena. This animation uses weather and climate observations from NASA's MERRA dataset to model 30 days of the jet stream's whirling journey over North America.

Release details

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Clip Properties:

  • Duration: 00:00:32
  • Audio: No
  • Interlaced: No
  • Capture Format: QuickTime Animation
  • Codec: Photo - JPEG

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